For me barbarians. Other class also do kill steal and I would like to state what they use mostly to kill steal.
Barbarian - Seism
Elementalist - hail/meteor
Most archer type class - not sure but i think most of its skills. Someone tell me.
Krivis - Zaibas
Most archers, specially rangers
Barbs
Krivis’ Zaibas
Archers are f’ckin A$$hats. Seriously. I’ve met bots with more tact. This coming from someone who has 200+ hours in game, and 7 50-90 Characters. Just today, I can think of three times I wanted to reach through my screen and strangle an Archer.
EDIT: I’m not perfect, but I damn well will try my hardest NOT to kill steal unless it’s obvious the person does not care about doing it to me. I have stopped mid-cast, I have changed channel, ect.
- Most archers, specially rangers
[irony]
Hey, when I’m about to clear that room with gazillions of monsters, other players cannot seriously expect me to not hit their monsters with my dumbfire skills, right? Right?
[/irony]
In all seriousness, I’m a Ranger C3/Fletcher C1 and I don’t killsteal. Maybe once when other people start it and they’re pissing me off with it.
Yeah I agree, sadly most of this type of players do exist in most MMO except when I played FF14 with japanese players most of them have shame to kill steal you and will say sorry if they accidentally hit it. But somehow IMC also has fault because of the fckng slow and number of spawn rate.
Well it can’t be helped can it? Great power comes with great responsibility 
1 - archers
2 - cataphracts, ■■■■ them using trot just to be able to ks on time
3 - unintended sorc summons?
1: Archers
2: Rangers
3: Hunters
Kappa
Haha I played XI for 7 years and XIV since it came out in Alpha V1. God I miss the Japanese Crowd, so polite. Could you imagine if they made it like XI (least old XI, idk bout now) where if you tag it another player can’t touch it unless in your group. (Granted this would suck for World bosses I suppose) But hey more power to Party camping!
The funny thing is this kill stealers will run away from you fast after they did it. Are they potential criminals? Lol.
Those god damn swordsmen… Then I follow them around and Magic Missile everyting they walk towards till they port out. It’s because I’m a petty, vindictive, hateful little man.
The best moment when you sees a silver galok right in front of you and a higher level priest bot walk to it while you bring it down to half hp and… Poof battle bracelet but it’s not yours. HOORAH
PS. seriously fk you all RMT bots.
+1
It’s funny how this became a cliche already.
i love ksing with magic missle.
When you hear the shout, it’s a sign haha.
From my experience as a full support Priest running around solo from level 1 ~ 144.
Archers.
I had some experiences with 1 or 2 swordsman and some elementalists but mostly Archers.
I find it funny, bots who I once encountered somewhere near Forest of Prayers in the same area have even more etiquette than real people lol
I’ve been tolerant of the KSing since it has been a thing in MMORPGs so I’m a bit okay with it. I expect in the future there would be more once F2P starts. But damn are they everywhere xD I mean just recently before the maintenance I got KSd randomly in Demon Prison 5F by an Archer 
had a wizard ks on my mobs for quite a while
and when i accidentally ks his because well im spamming and have delays
he called me a jerk and an a$$hole. he already forgot he did a lot more ks than me on him.
for archers being mostly ks well, you cant blame them if they are ranger. sometimes aoe goes beyond what they are targeting. for non ranger, they dont have much aoe and sometimes to finish quest (no one would ks for the exp only for the quest) they had to resort to ks. thats what i did sometimes when i only need 2 more and someone came and almost wipe the whole room that i’ve stayed for 5-10 mins because of low spawn rate
Me
Me
Literally Me
That’s right, I KS myself!!
Joking aside… a wizard can KS accidentally with their magic missle since it scatters and may hit distant ones. Elementalists that meteor still have to cast it 3-5-10 seconds before they hit it, unless their being dimiky and quick cast tap meteor then there is not much you can do but kill your monsters before they come and ruin it. Also note elementalist’s electrocute is just like magic missle, it will sometimes chain to your monsters accidentally and there is nothing you can do about it.